US Bridges

Ash Road over Swan Creek

Fair

Wayne County, Michigan · Huron E/Waltz · Structure no. 000000000012279

Built
1976
49 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
70
1997 count
Owner
County
County Highway Agency

About this bridge

Ash Road over Swan Creek is a prestressed concrete tee beam carrying Ash Road over Swan Creek in Wayne County, Michigan. It was built in 1976, so it is 49 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 70 vehicles a day, projected to reach 81 by 2015. The structure is 35 ft (10.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAsh Road
CrossesSwan Creek
LocationHuron E/Waltz
RouteCounty Highway 0
CountyWayne County
StateMichigan
Coordinates42.10824, -83.39739
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; extensive scour has occurred
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length35 ft (10.6 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (1997)
Projected traffic81 by 2015
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ash Road over Swan Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Ash Road over Swan Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Ash Road over Swan Creek carry?

About 70 vehicles per day (1997 count).

How long is Ash Road over Swan Creek?

The structure is 35 ft (10.6 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Ash Road over Swan Creek?

It is owned by the County Highway Agency.